But the fact that reducing cholesterol is considered good for you in the first place, depends on these kinds of studies on population intake to know how much cholesterol people are eating and then link it to reports of heart disease, or cancer, or whatever the health outcome is.
但减少胆固醇这个事实,首先对你来说是好的,依据这些关于总体摄入量的研究可以知道,人们摄入胆固醇的多少,关系到心脏疾病,或癌症或其他健康问题
When you get--this is Rituparna, counting the leaves on a tree-- you can estimate, from a sample, the population expected values.
如果你...像数叶子的睿都巴若那一样,只有部分样本的话,你可以来估计总体均值
We could have gone on and studied the average at-risk population for decades and centuries.
我们本可以继续研究几百年来的,平均受危人群。
Because on second exposure there's another population of cells that I haven't mentioned before that remain after the primary exposure and those are called memory cells, they're down here.
因为在再次免疫中,有另外一些细胞,我之前并没有提到过它们,在初次免疫结束后保留下来的细胞,被称为记忆细胞,它们在下面
But you can imagine the inability to do that in a big population study with thousands and thousands of subjects, so we have to rely on data like this.
但你们可以想象在一个大样本研究中,不可能对数以千计的研究对象做这种培训,所以我们需要依靠像这样的数据
We're kind of guessing on these population figures.
而我们对于这样得到的人口数据的准确性,仍表示怀疑
There is some reason to believe that in the population known as "psychopaths," a population we'll return to later on when we discuss mental illness, this sort of instinctive empathy is broken and the pain of others just doesn't bother them very much.
我们有理由相信,在一类被称为“精神变态者“的人当中“,我们以后会继续讨论这类人,当我们讲到精神疾病时,他们就没有这种本能的移情,他们对别人的痛苦无动于衷。
We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.
我们有几种不同的方式去定义这个概念,取决于我们指的是,样本均值还是总体均值
Well that counts on your ability to accurately assess what people are eating, or what the whole population is eating, and so measuring population intake is incredibly important to dietary recommendations.
要想准确评估人们在吃什么,或者整个,人类在吃什么,这只能依靠你的能力,所以统计总体摄入量,对饮食方面的建议非常重要
For now, just know that different kinds of cells, one of the ways they're different is that they express different proteins and the population of proteins on the surface of different cells is different.
现在,你们只要知道有不同的细胞,它们之间的一种区别,就是它们表达不同的蛋白,而不同细胞表面的蛋白种类,也是不同的
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